Discussion
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- Question
Sex hormones activate transcription of specific genes by
Options- A. binding to a transcription factor
- B. binding to RNA polymerase
- C. binding to DNA enhancer region
- D. binding to DNA promoter region
- Correct Answer
- binding to a transcription factor
- 1. Enhancers differ from promoters in that
Options- A. they initiate transcription
- B. they are adjacent to the start codon
- C. their orientation can be inverted without effect
- D. they are restricted to a specific gene Discuss
- 2. Tubulin is regulated by
Options- A. binding of tubulin to tubulin mRNA
- B. splicing of the tubulin transcript
- C. binding of tubulin to the tubulin translational product
- D. binding of tubulin to DNA Discuss
- 3. Which of the following is not a transcription factor?
Options- A. Helix-turn-helix proteins
- B. Zinc finger proteins
- C. Leucine zipper proteins
- D. Steroid hormones Discuss
- 4. In the presence of high levels of tryptophan
Options- A. attenuator allows transcription of trp structural genes
- B. attenuator propogates transcription
- C. attenuator terminates transcription
- D. none of the above Discuss
- 5. A frameshift mutation occurs in the sigma subunit gene transcribed as part of SPOl early genes. What will be the immediate result?
Options- A. Early genes will not be translated
- B. Middle genes will not be transcribed
- C. The bacterial host will lyse immediately
- D. Infection will proceed as usual Discuss
- 6. The lac operon is translated into __________ proteins.
Options- A. 1
- B. 2
- C. 3
- D. 4 Discuss
- 7. In the presence of tryptophan in the cell, the repressor is __________
Options- A. bound to tryptophan
- B. bound to DNA
- C. bound to both DNA and tryptophan
- D. bound to neither tryptophan nor DNA Discuss
- 8. What technique can be used to determine the murderer who left blood with the victim?
Options- A. DNA sequencing
- B. PCR amplification
- C. Western blot
- D. RFLP mapping Discuss
- 9. PCR can be used to amplify a specific fragment of DNA from which of the following?
Options- A. A drop of blood
- B. A hair follicle
- C. A fragment of skin
- D. All of these Discuss
- 10. In a PCR reaction after four cycles, each molecule of a duplex DNA will give rise to
Options- A. 16 single strands of DNA
- B. 16 double stranded DNA
- C. 18 single strands of DNA
- D. 18 double stranded DNA Discuss
Genetic Regulation Prokaryotes problems
Search Results
Correct Answer: their orientation can be inverted without effect
Correct Answer: binding of tubulin to the tubulin translational product
Correct Answer: Steroid hormones
Correct Answer: attenuator terminates transcription
Correct Answer: The bacterial host will lyse immediately
Correct Answer: 3
Correct Answer: bound to both DNA and tryptophan
Correct Answer: PCR amplification
Correct Answer: All of these
Correct Answer: 16 single strands of DNA
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